The public service broadcaster committed a "major breach" of broadcasting rules by failing to disclose that the presenter of a film about Gaza was the child of a Hamas official, according to regulatory body Ofcom.
An investigation by Ofcom into the programme Gaza: How to Survive a Warzone has determined that the documentary was "substantially inaccurate".
The chief executive of the broadcaster had previously apologised, stating there had been "a serious error in relation to accuracy".
Ofcom has directed the corporation to transmit a peak-time announcement about its findings.
"Given this constitutes a major infringement of our regulations, we are ordering the corporation to air a announcement of our findings against it on the BBC's second channel at 21:00, with a date to be confirmed," the regulator stated.
'Possibility to Damage Credibility'
The watchdog's statement declared: "Our investigation concluded that the film's failure to disclose that the narrator's father occupied a post in the Hamas-run authority was substantially inaccurate.
"Consequently that the audience did not have essential details which may have been very significant to their judgment of the narrator and the details he presented.
"Confidence is at the core of the bond between a broadcaster and its viewers, especially for a national broadcasting corporation such as the British Broadcasting Corporation.
"This error had the potential to erode the very considerable levels of credibility that viewers would have invested in a factual film from the broadcaster about the Gaza conflict."
The film was withdrawn from the BBC's streaming service in last February after the boy's personal associations came to light, and in July an corporation's own inquiry concluded it breached the broadcaster's content policies on accuracy.
A corporation official stated: "The authority's determination is in accordance with the findings of the internal assessment, that there was a major oversight in the documentary in relation to the broadcaster's journalistic policies on factual correctness, which reflects regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we comply with the authority's determination in complete. We will follow the directive as soon as the date and language are finalised."
